Stéphane Alizon: Younited CTO's Fintech Leadership

Alejandro Martínez · 2026-03-27

Let's talk about the people shaping Europe's payment systems. You know, the ones behind the scenes who make the digital finance world actually work. Stéphane Alizon is one of those people. As the Chief Technology Officer of Younited, he's been steering the company's tech ship since 2014, and his journey is a masterclass in scaling a fintech platform. He's got over two decades of experience across fintech, digital platforms, and those massive enterprise systems that keep everything running. His central role? Taking Younited from a fast-growing startup to a European leader. We're talking about a company that now operates in five countries and processes over $1.1 billion in annual Gross Merchandise Value. That's a serious scale-up. ### Building a Tech Powerhouse When Stéphane stepped in, the engineering team was about 10 people strong. Fast forward to today, and he's grown that organization to 200. But it's not just about numbers. He's built a culture focused on excellence, agility, and real innovation. Think about the shift he led—a full migration from a clunky legacy system to a sleek, cloud-native architecture built on microservices. This wasn't a small project. The new system comprises more than 200 individual services. Here's the kicker: this move made Younited the very first institution regulated by the Banque de France to operate entirely in the cloud. That's a huge milestone for trust and security in European fintech.  ### The Engine of Innovation What does this modern tech foundation enable? A lot. Stéphane established a highly automated CI/CD pipeline that allows for more than 15 deployments every single day. That's the kind of speed that lets a company adapt and launch new features almost in real-time. He also reinforced their cyber defenses to what he calls 'state of the art' standards—something every payments professional thinks about daily. His leadership directly fueled the launch of new business lines that are crucial for any modern financial platform: - Credit as a Service - Payments solutions - Personal Financial Management (PFM) tools These weren't developed in a vacuum. They came alongside major strategic partnerships with global players, helping Younited's offerings reach further. ### Beyond the Code Stéphane's impact goes way beyond the server room. As a member of the Executive Committee (ExCo), he's contributed directly to fundraising efforts, international expansion plans, and even Younited's listing on Euronext Tech Leaders. That's a CTO who understands the entire business, not just the technology. His career before Younited reads like a who's who of large-scale digital transformation. He held senior tech roles at PMU, Renault, and Atos, where he delivered complex international platforms and massive digital programs. That experience in traditional, large corporations likely gave him the perfect perspective for bringing robust, scalable thinking to the agile world of fintech. In a world where European payment news is constantly buzzing about new regulations like PSD3 and systems like Wero, it's the technologists like Stéphane Alizon who are building the resilient, secure, and innovative platforms that will power the next decade of finance. They're the ones ensuring the infrastructure can handle the vision, making sure that when a new payment service launches, it doesn't just work—it excels.